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Compare 2–4 cars side by side. Every figure is sourced; the best value in each comparable row is marked.
| Specification | BMW2025 BMW M850i xDrive Coupe | BMW2025 BMW M4 Competition xDrive Coupe |
|---|---|---|
| Performance | ||
| Top speedHigher is better | 155 mphManufacturer claim · BMW | 180 mphBestIndependent test · Car and Driver |
| Power-to-weight ratioHigher is betterCalculated from peak power and curb weight — figures quoted against a different weight basis (e.g. dry or DIN) will differ. | 257.5 hp/tCalculated | 284.0 hp/tBestCalculated |
| Lateral accelerationSkidpad radius and surface affect results. | — | 1.02 gIndependent test · Car and Driver |
| Acceleration | ||
| 0–60 mphLower is betterRollout (1ft) handling differs between testers and manufacturers. | 3.60 sManufacturer claim · BMW | 2.80 sBestIndependent test · Car and Driver |
| 0–100 km/hLower is better | 3.70 sManufacturer claim · BMW | 3.50 sBestManufacturer claim · BMW |
| 0–100 mphLower is better | 7.60 sIndependent test · Car and Driver | 6.90 sBestIndependent test · Car and Driver |
| 0–200 km/hLower is better | 13.2 sIndependent test · auto motor und sport | 11.8 sBestIndependent test · auto motor und sport |
| Quarter-mile elapsed time | — | 11.00 sIndependent test · Car and Driver |
| Braking | ||
| 70–0 mph braking distanceLower is better | 161.0 ftIndependent test · Car and Driver | 150.0 ftBestIndependent test · Car and Driver |
| 100–0 mph braking distance | — | 302.0 ftIndependent test · Car and Driver |
| Engine & Powertrain | ||
| Peak powerHigher is better | 523 hpBestManufacturer claim · BMW | 503 hpIndependent test · Car and Driver |
| Peak torqueHigher is better | 553 lb-ftBestManufacturer claim · BMW | 479 lb-ftIndependent test · Car and Driver |
| Engine displacement | 4395.0 ccManufacturer claim · BMW | 2993.0 ccIndependent test · Wikipedia |
| Cylinder count | 8Manufacturer claim · BMW | 6Homologation · US EPA |
| Engine layout | V8Manufacturer claim · BMW | Inline-6Independent test · Wikipedia |
| Engine placement | FrontManufacturer claim · BMW | |
| Dimensions | ||
| Length | 191 inManufacturer claim · BMW | 189 inIndependent test · Wikipedia |
| Width | 75 inManufacturer claim · BMW | 74 inIndependent test · Wikipedia |
| Height | 53 inManufacturer claim · BMW | 55 inIndependent test · Wikipedia |
| Wheelbase | 111 inManufacturer claim · BMW | 112 inIndependent test · Wikipedia |
| Weight | ||
| Curb weightLower is better | 4478 lbManufacturer claim · BMW | 3904 lbBestIndependent test · Car and Driver |
| Fuel Economy | ||
| Fuel economy (combined)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 19.0 mpgBestHomologation · US EPA | 18.0 mpgHomologation · US EPA |
| Fuel economy (city)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 17.0 mpgBestHomologation · US EPA | 16.0 mpgHomologation · US EPA |
| Fuel economy (highway)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 24.0 mpgBestHomologation · US EPA | 23.0 mpgHomologation · US EPA |
| Fuel tank capacity | 18.0 galManufacturer claim · BMW | — |
| Estimated range (combined)Estimated from tank capacity and quoted combined economy — not an instrumented range. | 342 mi | |
| Practicality | ||
| Cargo volume | 15 ft³Manufacturer claim · BMW | — |
| Seats | 4Manufacturer claim · BMW | 4Independent test · Wikipedia |
| Pricing | ||
| Base price (as tested market)Demo prices only; not live FX. | $107,300Homologation · US EPA | $89,000Homologation · US EPA |
| Tires & Wheels | ||
| Front tire size | 245/35R20Manufacturer claim · BMW | 275/35ZR-19Independent test · Car and Driver |
| Rear tire size | 275/30R20Manufacturer claim · BMW | 295/30ZR-20Independent test · Car and Driver |
Every figure is the car’s preferred, sourced value. “Best” marks the strongest value in a row, judged on the canonical measurement (so a winner is correct whichever unit system you view). Open a car to see each value’s source, original units, and alternates.
Community index
Add a value with its source. An editor verifies every submission against its citation before it appears on the site.
| Quarter-mile trap speed |
|---|
| — |
| 125.0 mphIndependent test · Car and Driver |
| FrontIndependent test · Wikipedia |
| Induction type | Twin-turboManufacturer claim · BMW | Twin-turboIndependent test · Car and Driver |
|---|
| Redline | — | 7200Independent test · Wikipedia |
|---|
| Transmission type | Torque-converter automaticManufacturer claim · BMW | Torque-converter automaticHomologation · US EPA |
|---|
| Number of gears | 8Manufacturer claim · BMW | 8Homologation · US EPA |
|---|
| — |
| Estimated range (highway)Estimated from tank capacity and quoted highway economy — not an instrumented range. | 432 miCalculated | — |
|---|
| Estimated range (city)Estimated from tank capacity and quoted city economy — not an instrumented range. | 306 miCalculated | — |
|---|